Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. A circular grill of diameter 0.25 m and emissivity 0.9 is maintained at a constant surface temperature of 130°C. What electrical power is required when the room air and surroundings are at 24°C?
2. Many laptop computers are equipped with thermal management systems that involve liquid cooling of the cenfurnace gases is maintained at 1700 K during operation, while the outer surface of the steel is exposed to the air and walls of a large room at 25°C. The emissivity of the steel is s = 0.3.
(a) What is the rate of heat loss from the roof?
(b) If a 20-mm-thick layer of alumina-silica insulation (64 kg/m3) is placed between the refractory and the steel, what is the new rate of heat loss from the roof? What is the temperature at the inner surface of the insulation?
(c) One of the process engineers claims that the tem- perature at the inner surface of the insulation found in part (b) is too high for safe, long-term operation. What thickness of fireclay brick would reduce this temperature to 1350 K?
consider an air conditioning system where warm humid air flows first over cooling coils where it is cooled and
a cannon-ball of 5 kg acts as a piston in a cylinder of 0.15 m diameter. as the gun-powder is burned a pressure of 7
A shaft with a 2-inch outer diameter must deliver 5000 ft-lbs of torque. The shaft must be hollow and must simultaneously carry hydraulic fluid at an internal pressure of 30,000 psi. Assuming the shaft is closed-ended, and using the von Mises yield c..
the upper surface of a 50-cm-thick solid plate k237 wmk is being cooled by water with temperature of 20 degrees
A closed, rigid tank is filled with water. Initially, the tank holds 9.9 ft^3 saturated vapor and 0.1 ft^3 saturated liquid, each at 212F. The water is heated until the tank contains only saturated vapor.
the 20 mm diameter steel rod bc is attached to the lever ab and to the fixed support c shown in fig 9. the uniform
Find the input/output equation using the P-operator approach when x2 is the output.
A thermodynamicist is attempting to model the process of balloon inflation by assuming that the elastic casing behaves like a spring opposing the expansion as presented in the figure. As air is admitted, the spring is compressed.
hot air at 207 kpa and 200degc enters a 2.5-cm-id tube at 6 ms. the tube is constructed of copper with a thickness of
a load p 4000 lb acting at a point a of a beam produces 0.25 in at point b and 0.75 in at point c of the beam. find
an isentropic steam turbine processes 5kgs of steam at 4 mpa which is exhausted at 50 kpa and 100degc. five percent of
a curve in a speed track has a radius of 1000ft and a rated speed of 120mih. knowing that a racing car starts sliding
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd